Bjerknes Centre for Climate Research

Polycentric governance of cruise environmental impacts

Rapidly growing cruise ship tourism in northern regions has been a double-edged phenomenon, bringing monetary benefits to otherwise limited economic futures but also undesirable environmental impacts such as air pollution, wastewater discharge, and noise. This paper examines resp...

The LOLland offshore Lidar EXperiment (LOLLEX): a novel observational approach for the study of wind farm flow and entrainment

Vertical momentum entrainment is driven by vertical shear and turbulent mixing and plays a key role in the recovery of wind turbine and wind-farm wakes, but remains poorly documented by field measurements. The LOLland offshore Lidar EXperiment (LOLLEX) campaign introduced a novel...

Marine Heat Waves and Cold Spells – Multiple Analysis/Definitions (MHW-MAD): A Multi-Definition Global Marine Heatwave Database from Satellite Sea Surface Temperature Data

Marine heatwaves (MHWs) are prolonged anomalies of warm sea surface temperature (SST) that can disrupt marine ecosystems, physical climate processes, and human coastal activities. MHW definitions vary due to different stakeholders requirements, such as ecological scientists and c...

Mountain glacier evolution since the last interglacial

Abstract. Mountain glacier evolution since the last interglacial remains poorly constrained, with limited spatial and temporal coverage. Conventional modelling approaches typically target major climatic events, operate at coarse spatial resolution over limited spatial domains, or...

Recent intensification of extreme precipitation over East Antarctica driven by increases in greenhouse gases and stratospheric ozone

Abstract. Extreme precipitation is a major contributor to the total precipitation over Antarctica and its variability. However, it remains poorly understood whether Antarctic extreme precipitation has undergone recent changes and, if so, whether these changes are anthropogenicall...

Enhanced carbon loss in the Southern Ocean under mitigation scenarios

The Southern Ocean (SO) plays a pivotal role in the global carbon cycle by absorbing anthropogenic carbon dioxide (CO 2 ). Yet, it remains uncertain whether this role will persist under future mitigation efforts. Using idealized emission-driven simulations with the Community Eart...

Shifting shorelines and hydroclimate changes in southern South Africa: Insights from sediment provenance during the Middle Stone Age (90-50 ka)

Southern South Africa houses some key archaeological sites, which document the behavioural and technological development of Homo sapiens . During Marine Isotope Stages (MIS) 5 and 4, this region experienced marked climate variability, particularly in temperature and precipitation...

Eddy kinetic energy and energy conversion rates along the Atlantic Water boundary current north of Svalbard

Abstract. On the continental slope north of Svalbard, the boundary current carrying Atlantic Water (AW) loses heat as it flows eastward. This cooling cannot be fully attributed to atmospheric heat loss or turbulent mixing. Lateral exchange, potentially linked to mesoscale activit...